Wordnet 3.0
NOUN (1)
1. 
 a sect of Orthodox Jews that arose out of a pietistic movement originating in eastern Europe in the second half of the 18th century; 
 a sect that follows the Mosaic law strictly; 
[syn: Hasidim, Hassidim, Hasidism, Chasidim, Chassidim]
WordNet (r) 3.0 (2006):
Chassidim
    n 1: a sect of Orthodox Jews that arose out of a pietistic
         movement originating in eastern Europe in the second half
         of the 18th century; a sect that follows the Mosaic law
         strictly [syn: Hasidim, Hassidim, Hasidism,
         Chasidim, Chassidim]